Two different bets
Tremor, now part of Vercel, is laser-focused on one thing: getting you to a good-looking dashboard fast. It offers copy-paste React components for charts, KPI cards, tables and dashboard layouts, styled with Tailwind and built on Recharts for visualisation and Radix for interactive primitives. On top of the open components, it sells a large catalogue of premium blocks and templates that turn a blank page into a polished analytics console in an afternoon.
That specialisation is its strength. If your immediate need is charts and dashboards, Tremor is one of the fastest paths there, and the Vercel backing plus the Recharts/Radix foundation mean it's built on well-understood, widely-used pieces. The copy-paste model also means the component source lands in your repo, so you can tweak it freely.
Vireya is scoped much more broadly. It's a full design system — components, pre-composed blocks and a charts library — delivered as a versioned `@vireya/*` package, themed through a `--v-*` engine, and styled with static CSS Modules rather than Tailwind. The defining detail for this comparison is that Vireya's charts share the very same tokens as its components and blocks, so a chart and the card it sits in are themed by one vocabulary, not two. Vireya also opens a path to mobile that Tremor doesn't: the same web UI can ship as a hybrid native app.
The honest framing is scope and theming reach. Tremor is the specialist for dashboards and charts and excels at that narrow, valuable slice; Vireya covers the whole application surface and unifies charts with the rest of the UI under one token layer. Vireya is early (v0.1.0) and far younger than Tremor, so if dashboards are your only concern today, Tremor's catalogue and polish are well ahead — this is about breadth and approach.
Under the hood
Scope: dashboard specialist vs full design system
Tremor concentrates on the dashboard surface: charts, KPIs, tables and the layouts that frame them. It's deliberately narrow, which is why it's so quick for analytics UIs — but a full app's forms, navigation, overlays and feedback come from elsewhere.
Vireya is a complete system covering components, blocks and charts. Charts are one part of a broader vocabulary that also spans forms, layout, navigation and overlays, so an entire application — not just its dashboard — can be built and themed coherently from one source.
Charts: Recharts under Tailwind vs charts sharing UI tokens
Tremor's charts are built on Recharts and styled with Tailwind alongside its dashboard components, so visual consistency comes from applying the same Tailwind conventions across both.
Vireya ships its own charts library whose colors, spacing and type all resolve to the same `--v-*` tokens as every component and block. Re-theme once via `createTheme()` and the charts move with the rest of the UI, because they're literally driven by the same token layer rather than a parallel styling pass.
Distribution and styling: copy-paste Tailwind vs versioned tokenized CSS
Tremor's open components are copy-paste source styled with Tailwind, and its richest blocks and templates are premium products you buy. You own the copied code, and you maintain it — upstream fixes don't flow in automatically.
Vireya is a versioned package styled with static CSS Modules and `--v-*` tokens, with no Tailwind dependency and no runtime style engine. Its bundled blocks and charts are part of the package, so improvements arrive through upgrades rather than re-pasting.
Reaching mobile: web-only dashboards vs hybrid delivery
Tremor is a web dashboard toolkit. Its charts and KPI cards render in the browser, and there's no first-party path for putting that same dashboard onto a phone as a native app — mobile would be a separate build.
Vireya adds hybrid delivery to the picture. You build the UI once as a web app and run it inside a native WebView shell, with a typed RPC bridge (`@vireya/rpc`) wiring the native functions you need while dashboards and screens render from the web. It's the Mobile Bridge pattern Shopify documented and that commerce apps like Mercado Livre and Magazine Luiza adopted, so you reach mobile without rewriting the UI in React Native. The bridge is still maturing (Expo first via `@vireya/platform-expo`).
Side by side
| Vireya | Tremor | |
|---|---|---|
| Scope | Full component library + blocks + charts | Dashboard & chart components |
| Distribution | Versioned npm package | Copy-paste (premium blocks/templates paid) |
| Styling | CSS Modules + --v-* tokens, no Tailwind | Tailwind CSS |
| Charts | Own library, shares UI --v-* tokens | Built on Recharts, styled with Tailwind |
| Theming | Token engine, tier-based palette, light/dark | Tailwind config + CSS variables |
| Native mobile | Hybrid: web UI in a native WebView + typed bridge | Web only |
| Accessibility | Radix + base-ui primitives | Built on Radix primitives |
| Maturity | Early (v0.1.0), actively built | Established, Vercel-backed |
Where Tremor shines
- It's one of the fastest paths to a good-looking dashboard, with charts, KPI cards and tables designed to drop straight in.
- It's built on familiar, proven foundations — Recharts for charts, Radix for interactive primitives, Tailwind for styling.
- Its catalogue of premium dashboard blocks and templates can turn a blank page into a polished analytics console quickly.
- It's backed by Vercel and the copy-paste model lets you own and freely tweak the component source.
What Vireya does differently
- Vireya is a full design system, not a dashboard specialist — components, blocks and charts cover the whole app, not just analytics screens.
- Its charts share the exact `--v-*` tokens as every component and block, so charts and the UI around them theme together from one layer rather than via parallel Tailwind styling.
- It's styled with static CSS Modules and consumed as a versioned package, with no Tailwind dependency and no copy-paste source to maintain.
- Vireya is built for hybrid delivery — the same web UI ships to mobile inside a native WebView shell with a typed bridge for native functions — where Tremor stops at the web.
When to choose Tremor
- Your immediate, primary need is dashboards and charts specifically.
- You're already on Tailwind and want copy-paste dashboard components you can edit directly.
- You want ready-made premium dashboard blocks and templates to buy and assemble.
- Web is your only target and you don't need a full general-purpose component set.
When to choose Vireya
- You want a full design system for the whole app, not just dashboard components.
- You want charts that share one token vocabulary with the rest of your UI.
- You'd rather theme with `--v-*` tokens and consume a versioned package than write Tailwind and copy source.
- You want a path to ship the same UI as a hybrid mobile app, not just a web dashboard.
Switching from Tremor to Vireya
Moving from Tremor to Vireya tends to be an expansion rather than a like-for-like swap, because Tremor only covers the dashboard slice. You replace Tremor's copy-paste chart and dashboard components with Vireya's bundled charts, and pick up Vireya's full component set — forms, navigation, overlays, layout — for the rest of the application that Tremor left to you. Because both build their interactive pieces on Radix, the accessibility behaviour and component model feel familiar.
The styling change is from Tailwind classes (and any premium template source you copied) to static CSS Modules themed once through `createTheme()` with `--v-*` tokens, which also unifies your charts with the surrounding UI under a single vocabulary. You also gain a path to ship the same UI as a hybrid mobile app via a native WebView shell, which Tremor's web-only toolkit never offered. The two can coexist during the transition, so teams usually migrate dashboard by dashboard, retiring copied Tremor source as Vireya equivalents land.
The bottom line
Tremor and Vireya overlap on charts but differ in scope. Tremor is a focused, polished dashboard toolkit — if analytics screens are your immediate need and you're on Tailwind, its components and premium templates get you there fast, and its catalogue is well ahead. Vireya is a full design system whose charts share one token layer with every component and block, consumed as a versioned package without Tailwind and able to ship the same UI to mobile as a hybrid native+WebView app. Choose Tremor for dashboards specifically; choose Vireya when you want charts unified with a complete, tokenized UI — accepting it's a younger project.
Still deciding? Read why teams choose Vireya, see how theming works, or browse the live blocks and charts showcases. You can also see other comparisons, browse UI library alternatives and the best library by use case, or read about Tremor directly.
Frequently asked questions
Is Vireya a Tremor alternative?
For teams who want a full design system rather than dashboard-only components, yes. Vireya bundles components, blocks and a charts library that all share --v-* tokens, styled with static CSS Modules and consumed as a versioned package. Tremor specializes in dashboards and charts via copy-paste Tailwind components.
Do Vireya's charts match the rest of the UI like Tremor's?
Even more directly. Vireya's charts resolve to the same --v-* tokens as its components and blocks, so they re-theme together from one layer. Tremor's charts (built on Recharts) are styled with Tailwind alongside its dashboard components, so consistency comes from sharing Tailwind conventions.
Does Vireya use Tailwind like Tremor?
No. Tremor is Tailwind-based and copy-paste. Vireya ships static CSS Modules driven by --v-* tokens, with no Tailwind dependency, and is consumed as a versioned package rather than copied into your repo.
Is Vireya only for dashboards?
No. Tremor specializes in dashboards and charts. Vireya is a full design system covering forms, navigation, overlays, layout and feedback as well as charts and blocks, so it suits whole applications, not just analytics screens.
Can Tremor or Vireya ship a mobile app?
Tremor is a web dashboard toolkit — mobile would be a separate build. Vireya is built for hybrid delivery: the same web UI runs inside a native WebView shell with a typed bridge for native functions (the Mobile Bridge pattern Shopify documented and apps like Mercado Livre and Magazine Luiza use), so you reach mobile without rebuilding the UI. The bridge is maturing, Expo first.
Which should I choose?
Choose Tremor if dashboards and charts are your specific need and you want copy-paste Tailwind components plus premium templates. Choose Vireya if you want a full design system whose charts share one token vocabulary with the rest of the UI, plus a path to ship the same UI as a hybrid mobile app.